US1879030A - Drill column - Google Patents

Description

Sept. 27. YA'C BAYLES l,879,030

DRILL COLUMN Filed Nov. 14,'1928 2 sheetssheet 1 INVENTO.

Patented Sept. 27, 1932 ATN A, fl;-

LEWIS C. BAYLES, or EASTON, PENNSYLVANIA, ASSIGNORI lro INGERsoLIi-RAND CoM- M EAN'Y, CE JERSEY CITY, NEW JERSEY, A CORPORATION oE- NEW JERSEY man@ DRILL COLUMN Application led November 141928. Serial No. 319,324.

` This invention relates to columns or sup# ports adapted to support a rock drillin its operative position, but more particularly to the means for maintaining the column rigidly in position.

The objects of this invention are to produce a simple,e1icient and safe column or support suitable for supporting rock drills 0r other kind of machines. Another obj ect is to enable the setting up of a drill column where the rock walls, against which the drill column ends are to be secured, present an uneven surface. To these ends the invention is shown in several of its preferred forms inthe accompanying drawings, in which Figure 1 is a view of the complete column the column being' shown in section, "7

Figure 2 is a View of the upper end of the column showing the disposal of the securing parts when the face of theY rock is not perpendicular to the drill'column.

with the rock drill mounted thereon,`"part ofV Figure 3 is an enlarged viewV of a vertica Y cross section of Figure'2, Figure 4 is a top view of the upper end of the column,

Figure 5 is a view similar to Figure 3 showing a' modification ofc-the device shown in Figure 3.

Figure 6 is another modification of the device shown in Figure 3,V t

Figure 7 discloses a means of using the securing device on the lower end of the drill column, and l Figure 8 is a still further modiication of the device shown in Figure 3.

Referring to the drawings, the column comprises a tubular body portion 10 havinga nut 12 secured in one end, in this instance in the 401 lower end, in axial alignment with the body portion 10. The nut 12 is prevented from rotating by a pin 14 which passes through the body portion 10 and into the nut 12. An intcriorly threaded portion 16 in the nut 12 45. is adapted to receive the screw 18 of a screw tion 1Y0 ofthe drill column, Corrugations `32are cut in the face 28' and aseat 34 is nels or drifts, the floor or ceiling, of the tunnel or drift, presents a very uneven Surface against which 1 the drill columns must be fastened. To's'ome eXtent'the difficulties of fasteningV a drill Vcolumn under Such conditions may be. obviated by the use of a sharpv point or points at either end of the drill col-l umn. There are however4 many disadvani tages in the'use of such sharp points, chief among these isa likelihoodfof having the 60 points torn'out of the roclr during the operation of the drill,'particularly when ythe'rock is not of atough,teXture. Another disadvantage in the use of`a single'pointis that itl permits the 'drill column to rotate which is apt to cause the breakage o-f the drill steel or the associated'parts. To overcome these disadvantages and at the same time to prol vide a column which couldbe quickly and easily set up7 the device disclosed in the drawings' was produced,

The body portion of the column is adapted to receive thecyl'indrical extension-24 of'an enlarged head or cap 26. The cap 26 hasa face 28 which'is not perpendicular to the axis of the column. The head is secured in place oy'means of arivet 30 which passes through the cylindricalportion 24and the body porformed in the central part of the face.k VThe seat 34 is adapted to receive a Vshort Vcylindrical extension 36'which is formed on al plate 38. The plate138fis' provided `with corrugations 40 adapted to mesh with the corruga- 85' tions 32 on thehea'd 26.` The faces of the plate 38 are Vn onparallel or inclined to each other thus making the' plate 38 thicker on one-side-than on the other and permitting it to be supported by the cap 26 in a tilted position. A bolt 42 passes through the plate 38 and into the head 26 to securely hold the plate in place. A Yspring 44 placed under the head of the bolt 42 holdsthe corruga- 95 tions 32 and 40 of the headl 26 and the plate 38 respectively normally in engagement with each other .and allows of sufficient relative endwise movement of the plate to permit rotationof the plate@y The method of using the plate 38 is shown in Figures 1 and 2. When the rock surface against which the column is to be set presents a substantially horizontal face for the reception of a column, the thick edge of the plate is placed directly above the thinner edge of the head 26 whereby bringing the thin edge of the plate over the-thick edge of the head and so causing the entire upper surface of the plate 38 to come in contact with the horizontal rock wall or ceiling. Teeth 46 on the upper face of the plate 38 are partly embedded in the rock when the screw jack 20 force/s the column upward. ,Y Y I Assuming that the rock against which the column is to be set presents a sloping surface as shown in Figure 2, the plate 38 is then turned so that the thick edge of the plate is directly above the thick edge of the head 26. In this case the upper surfaceofthe said head 26 and the lower surface of the plate 38 would still be rigidly in contact but the upper surface of the plate 38 will present a correspondingly inclined surface to the rock wall and the entire surface ofthe plate 38 will be brought into contact with the rock and thus a firm footing for the column will be obtained. 'f

It will readily be seen that a slope of any inclination between the eXtreme of no slope as shown in Figure land the slope shown in Figure 2 may be obtained by turning the plate and column to their proper relative positions.V

. The modication shown in Figure 5, shows a rubber buffer 48 on the "upper surface of the plate38 inl place of the teeth Vshown in Figures 2 and 3. The method of securing the rubber buffer 48 to the plate 38 is clearly shown in Figure 5. A series of recesses, or, if preferred, a circular groove 50 formed in the face of the plate 38' in conjunction with -an annular groove 52 formedin the central part of the plate 38, provide lthe means of securing the rubber buffer 48 to the plate 38. The rubber buffer is molded or vulcanized in the grooves 5() andf52 and holes 54 are air vents to provide fornthe escape of air during the vulcanizing process. The projections Ion the rockface willembed themselves in the rubber buffer 48 and thus prevent slipping between the column andthe rock, the teeth 32 and 40 being in contact as in the foregoing case, will prevent slipping between the headi26 andthe plate 38 as well as preventing relative rotation between the column and the plate.

In the modification shown in Figure 6, the rubber buEer, which is secured to the head 26 by vulcanizing the rubber in the grooves 56, is placed between the head 26 and the plate 38. lIn this modication, the teeth in the upper surface of the plate will engage the rock as shown in Figuresy 1 and 2 and the rubber buffer 58 will form a resilient pad between the plate 38 and the cap 26. The member 60 is rigidly secured to the body portion 10 and the corrugations 62 cooperate with corresponding corrugations 64 in the cap 26 to prevent rotation between the column and the cap. Friction between the rubber buffer 58 and the plate 38 is sulficient to prevent rotation between those members.

Figure 7 discloses a method of using platev and the tilted head on'the lower end o-f the column to adapt the column for using when both the ioor and ceiling are uneven. In this illustration, the foot 66 of the column is not at right angles to the axis of the column and corrugations 68 cooperate with similar corrugations 70 on the upper face of the plate 72 which is substantially a duplicate of the plate 38 shown in Figure 3. It will be seen from Figure 7 that the same results can be obtained by using a tilted footing and a plate having non-parallel faces at the lower end of the column fas were obtained byusing the cap and plate at the l upper end of the column. Furthermore, a combination of wedge shaped plates at both upper and lower ends of the column will pro-- vide a means of mounting the column in a drift or tunnel regardless of the unevenness or inclination of ceiling and floor.

Figure 8 shows the use of a pair of plates 74 and 76 and it will be obvious to anyone skilled in the art that a wide range of inclination can be obtained through placing these plates in dierent positions. A further kadvantage of the use of two plates such as 74 and 76 is found in the fact that the cap 26 need not have its face tilted or inclined to the aXis of the body portion.

I claim:

l. A rock drill column comprising a body portion and a cap on the body portion, a member having a gripping face engaging a surface of the cap preventing relative rota tion therebetween and a second face not parallel to the first said face to present a tilted surface to theV rock. l

2. A rock drill column comprising a body IIO portion, a cap on the body portion, a member having a gripping face engaging a surface of the cap preventing relative rotation therebetween and arsecond'face not parallel to the first said face to present a tilted surface to the rock, means to prevent lateral displacement of the cap and member and a spring normally holding said gripping face and cap surface in engagement. p

3. A rock drill column comprising a body portion, a cap on the body portion and means adapted to be supported rigidly by said cap in a tilted position to present an inclined face to a wall or ceiling, said' cap having a face not at right angles tothe axis of the body portion, ,said means comprising a member having non-parallel opposed faces one of inV which engages the cap face, and means to prevent rotation between said cap and said member.

4. A rock drill column having a cap on `the one end thereof, and means supported by said cap to present an inclined face to a wall or ceiling, said cap having a face in non-perpendicular relationship to the axis of the drill column, and said means comprising a member having two non-parallel opposite surfaces one of which coacts with the face of the cap to prevent relative rotation therebetween.

5. A rock drill column having a cap at one end thereof, said cap having a face in tilted relationship to the axis of the drill column, a member having two non-parallel opposite faces adapted to be interposed between said cap and a wall, floor, or ceiling, and means to prevent relative rotation between the cap and said member.

6. A rock drill column having an end face out of perpendicular relationship with its axis, a wedge-shaped member coaxial therewith and having one of the wedge faces in Contact with said end face, and means rotatably mounting the wedge-shaped member to vary the angularity of the other wedge face with respect to the axis of the drill column.

In testimony whereof I have signed this specification.

LEWIS C. BAYLES.

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